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建立考虑保温层厚度对地板辐射供暖性能影响的传热模型,将CFD模拟散热量和现行规范给出的散热量值进行对比,验证了模型的正确性。数值模拟在不同工况下保温层厚度对地面平均温度、有效散热量、热量损失以及地板表面温度均匀性的影响。模拟结果可知,增加保温层厚度有利于提高地板表面平均温度,增加有效散热量、降低热损失百分比、提高地板表面温度分布的均匀性;保温层厚度在25~40 mm范围内较为合理,以30 mm为最佳。
A heat transfer model considering the effect of insulation thickness on radiant floor heating performance is established. The simulation results show that the simulation results show that the model is correct. Numerical simulation of insulation thickness under different conditions on the average ground temperature, the effective heat dissipation, heat loss and floor surface temperature uniformity. Simulation results show that increasing the thickness of the insulation layer is beneficial to increase the average surface temperature of the floor, increase the effective heat dissipation, reduce the percentage of heat loss and improve the uniformity of the temperature distribution on the floor surface. The thickness of the insulation layer is reasonable within the range of 25-40 mm, mm is the best.